Fermented milk products or fermented dairy products, also known as cultured dairy foods, cultured dairy products, or cultured milk products, are dairy foods that have been made by fermenting milk with lactic acid bacteria such as Lactobacillus, Lactococcus, and Leuconostoc. The process of culturing increases the shelf life of the product, while enhancing its taste and improving digestibility by the fermentation breakdown of the milk sugar, lactose.
There is evidence that fermented milk products have been produced since around 10,000 BCE. Numerous Lactobacilli strains have been grown in laboratories allowing for diverse cultured milk products with different flavors and characteristics. Most of the bacteria needed to make these products thrive under specific conditions, giving a favorable environment for production of fermented foods, such as cheese, yogurt, kefir, and buttermilk.
